Actually, I thought the debate was pretty even and I would guess it a draw.
I thought the most potentially devastating bit was one that caught Romney completely off-guard and he failed to knock out of the park. That is when Obamalied about calling the Libya incident a terror attack the next day in the Rose Garden. Of course it was a closing remark that definitely appeared to be speaking in generalities as opposed to the specific incident on 9/11. Romney just looked floored that the President could deny it, and then when the moderator back him up on it that sent him spinning. Romney could have simply come back with why did the President over the next week say it was under investigation and wouldn't refer to it as a terrorist attack on Letterman or The View.
The President was a LOT getter tonight (hard to imagine him being worse). I think he was still wrong on most of the issues, but he was engaged and fighting tonight unlike the first debate.